SENN GROUPSENN GROUPSENN GROUPSENN GROUP
  • Home
  • Group Members
    • Dr Mark Senn
    • Dr Nick Funnell
    • Evie Ladbrook
    • Ben Tragheim
    • Dr Struan Simpson
    • Dr Craig Hiley
    • Matt Edwards
    • Dr Catriona Crawford
    • Dr Robin Sjokvist
    • Dr Cameron Wilson
    • Elizabeth Arnold
    • Jaskaran Mangat
  • Research
  • Fundamental Science Matters
  • Publications
  • Funding
  • Group Meetings
  • Collaborators
  • Contact

B-Cation Order Control of Magnetism in the 1322 Perovskite CaCu3Fe2Nb2O12

    Home Publications B-Cation Order Control of Magnetism in the 1322 Perovskite CaCu3Fe2Nb2O12
    NextPrevious

    B-Cation Order Control of Magnetism in the 1322 Perovskite CaCu3Fe2Nb2O12

    By Mark | Publications | Comments are Closed | 15 February, 2016 | 0

     

    Cation ordering in the 1322 perovskite CaCu3Fe2Nb2O12 has been investigated by synchrotron X-ray diffraction structure analysis, high-resolution electron microscopy, and magnetic measurements. All of the samples have full 1:3 ordering of Ca and Cu cations at the perovskite A-sites, but the Fe and Nb cations at the B sites show different degrees of ordering depending on the synthesis conditions. A slow-cooled sample has almost complete rock-salt-type 1:1 cation ordering at the B sites, but a rapidly cooled sample has no long-range B-cation arrangement. The ordered compound shows a large saturated magnetization (5.7 μB/formula unit (fu)) below 170 K due to the ferrimagnetism of the A′-site Cu2+ and B-site Fe3+ spins, whereas the B-site disordered form has a small magnetization (<1 μB/fu at 5 K). The degree of B-site cation order thus controls the magnetic behavior of 1322 CaCu3Fe2Nb2O12 perovskites.

    No tags.

    Mark

    Principal Investigator

    More posts by Mark

    Related Posts

    • Symmetry-adapted pair distribution function analysis (SAPA): a novel approach to evaluating lattice dynamics and local distortions from total scattering data

      By Mark | Comments are Closed

      T. A. Bird, A. Herlihy and Mark S. Senn, J. Appl. Cryst. (2021). 54. A novel symmetry-adapted pair distribution function analysis (SAPA) method for extracting information on local distortions from pair distribution function data isRead more

    • In Situ X-ray Diffraction Investigation of Electric Field-Induced Switching in a Hybrid Improper Ferroelectric

      By Mark | Comments are Closed

      Gabriel Clarke, Chris Ablitt, John Daniels, Stefano Checchia and Mark S. Senn. J. Appl. Cryst. (2021) 54. Improper ferroelectric materials are increasingly under investigation for their potential to expand the catalogue of functional ferroelectrics andRead more

    • From first- to second-order phase transitions in hybrid improper ferroelectrics through entropy stabilization

      By Mark | Comments are Closed

      Fernando Pomiro, Chris Ablitt, Nicholas C. Bristowe, Arash A. Mostofi, Choongjae Won, Sang-Wook Cheong, and Mark S. Senn.Phys. Rev. B 102, 014101. Hybrid improper ferroelectrics (HIFs) have been studied intensively over the past few yearsRead more

    • Anharmonicity and scissoring modes in the negative thermal expansion materials ScF3 and CaZrF6

      By Mark | Comments are Closed

      Tobias Bird, Jessica Woodland-Scott, Lei Hu, Michael Wharmby, Jun Chen, Andrew Goodwin, Mark Senn, Phys. Rev. B 101(2020), 064306. We use a symmetry-motivated approach to analysing X-ray pair distribution functions to study the mechanism ofRead more

    • Tolerance Factor Control of Uniaxial Negative Thermal Expansion in a Layered Perovskite

      By Mark | Comments are Closed

      Chris Ablitt, Harriet McCay, Sarah Craddock, Lauren Cooper, Emily Reynolds, Arash A. Mostofi, Nicholas C. Bristowe, Claire A. Murray, and Mark S. Senn. Chem. Mater. 2020, 32, 1, 605-610. By tuning the tolerance factor, t,Read more

    Leave a Comment

    NextPrevious
    • News
    Copyright 2025 SENN GROUP | All Rights Reserved | Login | Website: Hilo Collective
    • Home
    • Group Members
      • Dr Mark Senn
      • Dr Nick Funnell
      • Evie Ladbrook
      • Ben Tragheim
      • Dr Struan Simpson
      • Dr Craig Hiley
      • Matt Edwards
      • Dr Catriona Crawford
      • Dr Robin Sjokvist
      • Dr Cameron Wilson
      • Elizabeth Arnold
      • Jaskaran Mangat
    • Research
    • Fundamental Science Matters
    • Publications
    • Funding
    • Group Meetings
    • Collaborators
    • Contact
    SENN GROUP